The aim of this paper is to investigate a novel technique to
control the flow around a circular cylinder. This technique
consists of putting a moving membrane stuck to the cylinder. The
commercial software Ansys fluent 16.0 is used. The motion of
the moving membrane is governed by a user-defined function.
The numerical simulation is performed for the Reynolds number
equal to Re=150. By changing the frequency of the oscillating
membrane from f=0.1Hz to f=6.0Hz, we found that the drag
coefficient is significantly affected and its curve shows a beat
phenomenon for f around 4.5 Hz.
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.